二进制字符串相加
转载自:
https://leetcode.com/problems/add-binary/discuss/
洋人写的好优雅啊
本文名称:二进制字符串相加
网站网址:http://scyanting.com/article/jojdhp.html
https://leetcode.com/problems/add-binary/discuss/
洋人写的好优雅啊
Given two binary strings, return their sum (also a binary string).
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For example,
a = "11"
b = "1"
Return "100".
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public class Solution{
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public String addBinary(String a, String b) {
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if(a== null || a.isEmpty()) {
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return b;
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}
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if(b== null || b.isEmpty()) {
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return a;
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}
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char[] aArray= a.toCharArray();
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char[] bArray= b.toCharArray();
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StringBuilder stb= new StringBuilder();
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int i= aArray.length - 1;
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int j= bArray.length - 1;
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int aByte;
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int bByte;
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int carry= 0;
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int result;
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while(i> -1|| j> -1|| carry== 1) {
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aByte= (i> -1) ? Character.getNumericValue(aArray[i--]) : 0;
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bByte= (j> -1) ? Character.getNumericValue(bArray[j--]) : 0;
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result = aByte ^ bByte ^ carry;
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carry= ((aByte+ bByte+ carry) >= 2) ? 1: 0;
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stb.append(result);
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}
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return stb.reverse().toString();
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}
- }
本文名称:二进制字符串相加
网站网址:http://scyanting.com/article/jojdhp.html